Drawing with mogrify

mogrify.sh

convert -size 320x90 xc:none -stroke snow4 -size 1x90 -tile gradient:white-snow4 \
  -draw 'roundrectangle 16, 5, 304, 85 20,40' +tile -fill snow \
  -draw 'roundrectangle 264, 5, 304, 85  20,40' -tile gradient:chartreuse-green \
  -draw 'roundrectangle 16,  5, 180, 85  20,40' -tile gradient:chartreuse1-chartreuse3 \
  -draw 'roundrectangle 140, 5, 180, 85  20,40' +tile -fill none \
  -draw 'roundrectangle 264, 5, 304, 85 20,40' -strokewidth 2 \
  -draw 'roundrectangle 16, 5, 304, 85 20,40' \( +clone -background snow4 \
  -shadow 80x3+3+3 \) +swap -background none -layers merge \( +size -font Helvetica \
  -pointsize 90 -strokewidth 1 -fill red label:'50 %' -trim +repage \( +clone \
  -background firebrick3 -shadow 80x3+3+3 \) +swap -background none -layers merge \) \
  -insert 0 -gravity center -append -background white -gravity center -extent 320x200 \
  cylinder_shaded.png

result.md